They exchanged tips about make-up and modellng and Bundchen happily posed for a series of photos with the youngster, who documented Bundchen's visit on her Instagram and Facebook pages.

In one accompanying caption, the teen blogger wrote, "From the moment you surprised me, until the moment you left, I was so shocked for you being here with me (sic)! Thank you so much for taking time off of your day to come visit me and spend some time with me! Also thank you for your kind words and your very meaningful gifts! You are a great person and you will continue inspiring me I love you @giseleofficial And to my followers: Stay tuned for something special on my blog!!! I'm so happy!!!!!!"

Bundchen returned the compliments in her own snap online, with a message to the bone-cancer sufferer which read: "You are [a] warrior, an inspiration of positivity and courage. I will be praying for you. Sending you love and light always."

The stunner wasn't the only celebrity giving back during the holidays. Oscar-winner Jennifer Lawrence paid a visit to patients at a children's hospital in her hometown of Louisville, Ky., while rapper Big Sean gifted sick kids in his native Detroit presents for Christmas during the weekend of Dec. 21.